Lost Sierra Endurance Race

The Lost Sierra Endurance Race, held in Downieville, California, offers three challenging trail running distances: 25K, 50K, and 100K. Set against the scenic Sierra Buttes, the 100K is an out-and-back course featuring rugged single-track trails, significant elevation gain (10,780 ft), and five aid stations. The 50K is a point-to-point route from Plumas-Eureka State Park to Downieville, with 5,360 ft elevation gain and four aid stations.

The 25K is a looped course through river canyons with moderate elevation gain (2,330 ft), ideal for less demanding runs. The event emphasizes a supportive atmosphere with aid stations, crew access, and post-race festivities including a BBQ. Visit the organization's website for the most recent information.